Hmm...we can't find this setting yet, but we'll keep checking. Feel free to contact us for help.
Looks like you're signed in with a Gmail account. Please try again with your account that you use to access Google Admin.
This policy controls the treatment for lock icon in the omnibox.
From Chrome M93, there is a new omnibox icon for secure connections.
If the policy is Enabled, Chrome will use the existing lock icon for secure connections.
If the policy is Disabled or not set, Chrome will use the default icon for secure connections.